After putting on a self-contained breathing apparatus, you open the air supply and hear a continuous ringing of a bell.What does this mean?（）.

A、The unit is working properly

B、The face mask is not sealed properly

C、The air bottle needs to be refilled

D、The air supply hose has a leak

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更多“After putting on a self-contained breathing apparatus, you open the air supply and hear a continuous ringing of a bell.What does this mean?（）.”相关的问题

第1题

[单选题] After casting off moorings at a mooring buoy in calm weather，you should（）.

A、go full ahead on the engine(s)  B、back away a few lengths to clear the buoy and then go ahead on the engines  C、go half ahead on the engines and put the rudder hard right  D、go half ahead on the engines and pass upstream of the buoy  

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第2题

[单选题] 带上吊索钩。（）

A、Put on the sling hooks.  B、Put up the sling hooks.  C、Put on the chain hooks.  D、Put on the cargo runner.  

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第3题

[单选题] After seeing that the gears are free to engage ,put the windlass（） .

A、into gear  B、for gear  C、on  D、gearing  

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第4题

[单选题] Upon hearing the abandon ship signal，you put on your life jacket and report to your station. After the cover is removed you board your open lifeboat boat. The FIRST thing to do is to（）.

A、release the gripes  B、release tricing pendants  C、put the cap on the drain  D、lift the brake handle  

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第5题

[单选题] 把防鼠挡装在系泊缆上。（）

A、Put rat guard on the deck.  B、Put rat guards on the moorings.  C、Put rat guard under the moorings.  D、Put rat guards under the moorings.  

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第6题

[单选题] The ship is now too much listing to portaide. I suggest that you（）light cargo on portside and heavy cargo on starboard side.

A、will put  B、would put  C、put  D、shall put  

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第7题

[单选题] 把防鼠档装在系泊缆上。（）

A、Put the rat guards on deck.  B、Put the rat guards on the moorings.  C、Put the rat guards under the moorings.  D、Put the rat guards over the moorings.  